/*
 *  Copyright 2012 yura.
 * 
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 * 
 *       http://www.apache.org/licenses/LICENSE-2.0
 * 
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *  under the License.
 */

package org.opu.odg.dg.util;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.OutputStream;
import org.simpleframework.xml.core.Persister;
import org.simpleframework.xml.stream.Format;

/**
 *
 * @author yura
 */
public abstract class XmlSerializator {
     
    private static final Persister persister = new Persister(
            new Format("<?xml version=\"1.0\" encoding=\"UTF-8\"?>"));

    public static <T> T read(Class<T> clazz, byte[] data) throws IOException {
        try {
            return persister.read(clazz, new ByteArrayInputStream(data));
        } catch (Exception ex) {
            throw new IOException(ex);
        }
    }

    public static <T> T readSafe(Class<T> clazz, byte[] data) throws IOException {
        if (data != null && data.length > 0) {
            return read(clazz, data);
        } else {
            return null;
        }
    }

    public static <T> void write(T t, OutputStream out) throws IOException {
        try {
            persister.write(t, out);
        } catch (Exception ex) {
            throw new IOException(ex);
        }
    }

    public static <T> void writeSafe(T t, OutputStream out) throws IOException {
        if (t != null) {
            write(t, out);
        }
    }
}
